Surprising Discovery of Two Ancient Galaxies Exposes Our Cloudy View of the Cosmos
The presence of two previously undetected galaxies some 29 billion light years away suggests our understanding of the early universe is upsettingly deficient.
Introducing REBELS-12-2 and REBELS-29-2 — two galaxies that, until very recently, we didn’t even know existed. The light from these galaxies took 13 billion years to get here, as these objects formed shortly after the Big Bang. The ongoing expansion of the universe places these ancient galaxies at roughly 29 billion light years from Earth.
New research published in Nature suggests REBELS-12-2 and REBELS-29-2 had escaped detection up until this point because our view of these galaxies is clouded by thick layers of cosmic dust. The Hubble Space Telescope, as mighty as it is, could not peer through the celestial haze. It took the ultra-sensitive ALMA radio …
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